Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Attribute “xmlns:fb” not allowed here.
Attribute “xmlns:addthis” not allowed here.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
A document must not include more than one “meta” element with its “name” attribute set to the value “description”.
The “center” element is obsolete. Use CSS instead.
No “p” element in scope but a “p” end tag seen.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
Element “g:plusone” not allowed as child of element “li” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “sidebar”.
Element “center” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Element “ins” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
The “align” attribute on the “div” element is obsolete. Use CSS instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.
Duplicate ID “widget_text”.
Element “script” must not have attribute “async” unless attribute “src” is also specified.
Stray start tag “script”.
Warnings:
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
Attribute with the local name “xmlns:addthis” is not serializable as XML 1.0.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
Element name “g:plusone” cannot be represented as XML 1.0.
The first occurrence of ID “sidebar” was here.
Empty heading.
The first occurrence of ID “widget_text” was here.
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